|12 Months Ended|
Dec. 31, 2015
|Goodwill and Intangible Assets Disclosure [Abstract]|
The following table summarizes acquired intangible assets as follows:
Amortization is computed on the straight-line method for financial reporting purposes, with the exception of backlog, which is amortized based on the expected realization period of the acquired backlog. Amortization expense for intangibles was $11.3 million, $15.8 million and $4.9 million for 2015, 2014 and 2013, respectively.
Based upon acquired intangible assets at December 31, 2015, amortization expense for each of the next five years is estimated to be:
The entire disclosure for all or part of the information related to intangible assets.
Reference 1: http://www.xbrl.org/2003/role/presentationRef